mirrors/serenity
1
0
Fork 0
mirror of https://github.com/SerenityOS/serenity.git synced 2025-01-24 02:12:09 -05:00
Code Issues Projects Releases Packages Wiki Activity

LibWeb: Compute horizontal overflow for the initial containing block

Browse source 
This finally allows LibWeb to scroll pages horizontally instead of just
clipping things at the right edge.
This commit is contained in:
Andreas Kling 2021-10-15 00:10:41 +02:00
parent 0241071ca2
commit 07096b7765
1 changed files with 9 additions and 5 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

14
Userland/Libraries/LibWeb/Layout/BlockFormattingContext.cpp
View file

@ -577,15 +577,19 @@ void BlockFormattingContext::layout_initial_containing_block(LayoutMode layout_m
layout_block_level_children(root(), layout_mode);
// Compute scrollable overflow.
float lowest_bottom = 0;
icb.for_each_child_of_type<Box>([&](auto& child) {
lowest_bottom = max(lowest_bottom, child.absolute_rect().bottom());
float bottom_edge = 0;
float right_edge = 0;
icb.for_each_in_subtree_of_type<Box>([&](auto& child) {
auto child_rect = child.absolute_rect();
bottom_edge = max(bottom_edge, child_rect.bottom());
right_edge = max(right_edge, child_rect.right());
return IterationDecision::Continue;
});
if (lowest_bottom >= viewport_rect.height()) {
if (bottom_edge >= viewport_rect.height() || right_edge >= viewport_rect.width()) {
auto& overflow_data = icb.ensure_overflow_data();
overflow_data.scrollable_overflow_rect = viewport_rect.to_type<float>();
overflow_data.scrollable_overflow_rect.set_height(lowest_bottom);
overflow_data.scrollable_overflow_rect.set_size(right_edge, bottom_edge);
} else {
icb.clear_overflow_data();
}